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31141212030 = 2325346013467
BaseRepresentation
bin11101000000001010…
…010010111101111110
32222101021200110222100
4131000022102331332
51002234122241110
622150040125530
72151464635425
oct350012227576
988337613870
1031141212030
1112230447575
1260511668a6
132c239451a6
141715c342bc
15c23e00bc0
hex740292f7e

31141212030 has 24 divisors (see below), whose sum is σ = 80967151512. Its totient is φ = 8304323184.

The previous prime is 31141211999. The next prime is 31141212041. The reversal of 31141212030 is 3021214113.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31141211994 and 31141212012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173006644 + ... + 173006823.

It is an arithmetic number, because the mean of its divisors is an integer number (3373631313).

Almost surely, 231141212030 is an apocalyptic number.

31141212030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31141212030 is an abundant number, since it is smaller than the sum of its proper divisors (49825939482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31141212030 is a wasteful number, since it uses less digits than its factorization.

31141212030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346013480 (or 346013477 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31141212030 its reverse (3021214113), we get a palindrome (34162426143).

The spelling of 31141212030 in words is "thirty-one billion, one hundred forty-one million, two hundred twelve thousand, thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 346013467 692026934 1038040401 1730067335 2076080802 3114121203 3460134670 5190202005 6228242406 10380404010 15570606015 31141212030